1-5 CBBCC
6-10 CBBBC
11-15 BCACB
16-20 ACCAC
21-25 BCDAC
26-30 CBACD
31-35 CADAB
36-40 BADBA
41-45 CBACD
46-50 ADBAC
51-55 ADCBD
56-60 CDCAC
61-65 ADDCD
66-70 DBCAC
71-75 DBDBA
76.Water is found on the surface of the moon.
77.Because the moon has no atmosphere.
78.The NASA team is sill not sure how much of what they have found is water and how much is hydroxyl.
79.below the surface of the moon
80.如果真是那样的话,那么月亮上可能储存着足够未来的勘查活动所需要的水.